A highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint and preparation method thereof

Abstract

The invention discloses a highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint and a preparation method thereof, and belongs to the technical field of water-based floor paint coatings. Acrylic emulsion has good wear resistance and acid resistance, and epoxy dispersion has good bonding performance and mechanical properties. The two can cooperate with each other to give the floor paint good wear resistance and weather resistance. The acrylic emulsion and epoxy dispersion selected by the present invention interact with each other, thereby playing a good role in the gloss, water resistance, wear resistance, acid resistance, and alkali resistance of the floor paint. By optimizing the addition amount of the wax emulsion of the present invention, the scratch resistance and wear resistance of the floor paint are improved. As a water-based single-component acrylic floor paint, the present invention is constructed in high temperature weather and will not affect the construction time, and solves the problem of the activation period that the water-based polyurethane floor paint needs to be used in combination with an isocyanate curing agent.

Description

Technical Field

[0001] The invention belongs to the technical field of water-based floor coatings, and in particular relates to a highly wear-resistant and weather-resistant acrylic hybrid epoxy floor coating and a preparation method thereof. Background Art

[0002] Water-based acrylic floor paint is an environmentally friendly floor coating material, which is widely used in outdoor floor coating due to its excellent weather resistance, water resistance and convenient construction. It is composed of acrylic emulsion, pigments, fillers, water, etc.

[0003] In the field of water-based floor paint, the most common types on the market are water-based acrylic floor paint, water-based epoxy floor paint, and water-based polyurethane floor paint. For water-based acrylic floor paint, the wear resistance of acrylic resin itself is not good, and it is a single component, so there is a problem of insufficient wear resistance. The wear resistance and chemical resistance are often not as good as water-based epoxy floor paint; and water-based epoxy floor paint has very strict requirements on temperature and humidity. Excessive humidity and low temperature will slow down or even stop the cross-linking curing, resulting in the paint film not drying for a long time. At the same time, its own weather resistance is an inevitable problem; although water-based polyurethane floor paint has the characteristics of wear resistance and weather resistance, it needs to be used in combination with isocyanate curing agent, resulting in the inability to completely solve the series of problems caused by the activation period at the construction end, especially in hot weather, the construction time will be greatly shortened, and due to the intervention of hydrophilic solvents, its water resistance is also insufficient.

[0004] Therefore, it has become an urgent task to find a water-based floor paint that has high wear resistance and weather resistance and can solve the problem of paint activation period at the construction end. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above problems existing in the prior art, the present invention is proposed.

[0007] Therefore, the object of the present invention is to overcome the deficiencies in the prior art and provide a highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint and a preparation method thereof.

[0008] To solve the above technical problems, the present invention provides the following technical solution: based on the mass proportion of the acrylic hybrid epoxy floor paint raw materials, it includes 100-150 parts of deionized water, 1-5 parts of fungicide, 1-5 parts of defoamer, 10-20 parts of dispersant, 2-4 parts of bentonite, 100-150 parts of rutile titanium dioxide, 10-50 parts of quartz powder, 30-80 parts of barium sulfate, 400-500 parts of acrylic emulsion, 80-150 parts of epoxy dispersion, 10-50 parts of film-forming aid, 10-30 parts of wax emulsion and 5-15 parts of thickener.

[0009] Specifically, the fungicide can be methylisothiazolinone, chloromethylisothiazolinone, or benzisothiazolinone; the wax emulsion can be carnauba wax emulsion, polyethylene wax emulsion, or paraffin microemulsion; and the thickener can be a polyurethane thickener, a polyacrylic acid thickener, an alkali swelling thickener, or a cellulose thickener.

[0010] As a preferred embodiment of the highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint of the present invention, the film-forming aid is composed of film-forming aid 1 and film-forming aid 2, wherein the film-forming aid 1 is dipropylene glycol butyl ether, and the film-forming aid 2 is dipropylene glycol methyl ether.

[0011] As a preferred embodiment of the highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint of the present invention, the film-forming aid, wherein the film-forming aid 1 is 10 to 30 parts and the film-forming aid 2 is 5 to 20 parts

[0012] As a preferred embodiment of the highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint of the present invention, the defoamer includes one or more of a mineral oil defoamer, a silicone defoamer, a polyether siloxane copolymer, and a polyether-modified siloxane defoamer.

[0013] As a preferred embodiment of the highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint of the present invention, the dispersant includes one or more of a modified styrene maleic anhydride copolymer solution, a modified polyether, and an acrylic copolymer polymer dispersant.

[0014] As a preferred embodiment of the highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint of the present invention, the bentonite includes one or more of sodium-based bentonite, calcium-based bentonite, organic bentonite, and lithium-based bentonite.

[0015] As a preferred embodiment of the highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint of the present invention, the barium sulfate is precipitated barium sulfate with a mesh size of 1250 to 4000 meshes.

[0016] Another object of the present invention is to overcome the deficiencies in the prior art and provide a method for preparing a highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint.

[0017] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0018] Deionized water, bactericide, defoamer, dispersant, bentonite, rutile titanium dioxide, quartz powder and barium sulfate are added in sequence at a speed of 300 to 500 r / min, the speed is increased to 1000 to 1200 r / min, and the mixture is dispersed for 10 to 15 minutes to obtain a first component slurry;

[0019] The first component slurry is fed into a horizontal sand mill for grinding;

[0020] Add acrylic emulsion, epoxy dispersion, film-forming aid 1 and film-forming aid 2, and wax emulsion to the ground first component slurry, evenly disperse at 500-700 r / min for 10-15 minutes, then add thickener at a stirring speed of 1000-1200 r / min, continue stirring for 10-20 minutes to obtain floor paint.

[0021] As a preferred embodiment of the method for preparing the highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint of the present invention, the grinding treatment comprises the following steps: the grinding time is 30-50 minutes, and the first component slurry is ground to a fineness of less than 40 um.

[0022] As a preferred embodiment of the highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint of the present invention, the floor paint is used to protect the floor from external damage and extend the service life of the floor.

[0023] Beneficial effects of the present invention:

[0024] (1) The highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint of the present invention designs a new floor paint formula. The acrylic emulsion has good wear resistance and acid resistance, and the epoxy dispersion has good bonding performance and mechanical properties. The two can cooperate with each other to give the floor paint good wear resistance and weather resistance. The acrylic emulsion and epoxy dispersion selected by the present invention interact with each other, thereby playing a good role in the gloss, water resistance, wear resistance, acid resistance and alkali resistance of the floor paint. By optimizing the addition amount of the wax emulsion of the present invention, the scratch resistance and wear resistance of the floor paint are improved.

[0025] (2) As a water-based single-component acrylic floor paint, the present invention can be applied in hot weather without affecting the construction time, thereby solving the problem of activation period when water-based polyurethane floor paint needs to be used in combination with isocyanate curing agent. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the embodiments of the specification.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] The following examples of the present invention use raw materials as follows:

[0030] The fungicide is KS1.5+ from Shanghai Pengtu;

[0031] The defoaming agent is Digo 810;

[0032] The dispersant is Digo's 855W;

[0033] The sodium salt dispersant is Nopco 5040;

[0034] The ammonium salt dispersant is Nopco 5027;

[0035] The bentonite is GT-20 from Zhejiang Yuhong New Materials;

[0036] The rutile titanium dioxide is 2377 from Shandong Dongjia Group;

[0037] The quartz powder is 800 mesh quartz powder from Zhenying Mining;

[0038] The barium sulfate was 4000 mesh barium sulfate from Jiangxi Guangyuan;

[0039] The acrylic emulsion is pure acrylic emulsion from Shanghai Baolijia;

[0040] The epoxy dispersion is the epoxy dispersion of Wuhan Shiquanxing;

[0041] The manufacturer of dipropylene glycol butyl ether is Dow Chemical;

[0042] The manufacturer of dipropylene glycol methyl ether is Dow Chemical;

[0043] The wax emulsion is from Nanjing Tianshi in 2004;

[0044] The thickener is Wanhua Group’s U905;

[0045] The test method used in the present invention is as follows:

[0046] Wear resistance test of the present invention:

[0047] A Taber abrasion tester was used, with the grinding wheel model CS-10F. The weight of the rubber grinding wheels at both ends was adjusted to 750g. After running 500 times at a speed of 60r / min, the mass loss after sanding was calculated for each test plate using the reduction method, and the average mass loss of the three test plates was taken.

[0048] Example 1

[0049] This embodiment provides a method for preparing a highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint, specifically:

[0050] Weigh the raw materials according to the following formula:

[0051] 100 parts of deionized water, 1 part of bactericide (chloromethylisothiazolinone), 1 part of defoamer (polyether siloxane copolymer), 10 parts of dispersant (modified styrene maleic anhydride copolymer solution), 2 parts of bentonite (sodium bentonite), 100 parts of rutile titanium dioxide, 10 parts of quartz powder, 30 parts of 1250 mesh precipitated barium sulfate, 400 parts of acrylic emulsion, 80 parts of epoxy dispersion, 10 parts of film-forming aid 1 (dipropylene glycol butyl ether), 5 parts of film-forming aid 2 (dipropylene glycol methyl ether), 10 parts of wax emulsion (polyethylene wax emulsion) and 5 parts of thickener (polyurethane).

[0052] 1) Prepare the first component slurry:

[0053] Deionized water, bactericide, defoamer, dispersant, bentonite, rutile titanium dioxide, quartz powder and barium sulfate were added in sequence at a speed of 300 r / min, the speed was increased to 1200 r / min, and the mixture was dispersed for 15 minutes to obtain a first component slurry.

[0054] 2) The first component slurry enters a horizontal sand mill for grinding. The grinding time is 50 minutes, and the first component slurry is ground to a fineness of less than 40 um.

[0055] 3) Add acrylic emulsion, epoxy dispersion, film-forming aid 1 and film-forming aid 2, and wax emulsion to the ground first component slurry, uniformly disperse at 700 r / min for 15 min, then add thickener at a stirring speed of 1200 r / min, and continue stirring for 10 min to obtain acrylic hybrid epoxy floor paint.

[0056] Example 2

[0057] The coating formula of the present embodiment is as follows:

[0058] 110 parts of deionized water, 1 part of bactericide (chloromethylisothiazolinone), 1 part of defoamer (polyether siloxane copolymer), 14 parts of dispersant (modified styrene maleic anhydride copolymer solution), 2 parts of bentonite (sodium bentonite), 130 parts of rutile titanium dioxide, 20 parts of quartz powder, 30 parts of 1250 mesh precipitated barium sulfate, 450 parts of acrylic emulsion, 80 parts of epoxy dispersion, 20 parts of film-forming aid 1 (dipropylene glycol butyl ether), 10 parts of film-forming aid 2 (dipropylene glycol methyl ether), 10 parts of wax emulsion (polyethylene wax emulsion) and 10 parts of thickener (polyurethane).

[0059] 1) Prepare the first component slurry:

[0060] Deionized water, bactericide, defoamer, dispersant, bentonite, rutile titanium dioxide, quartz powder and barium sulfate were added in sequence at a speed of 300 r / min, the speed was increased to 1200 r / min, and the mixture was dispersed for 15 minutes to obtain a first component slurry.

[0061] 2) The first component slurry enters a horizontal sand mill for grinding. The grinding time is 30 minutes, and the first component slurry is ground to a fineness of less than 40 μm.

[0062] 3) Add acrylic emulsion, epoxy dispersion, film-forming aid 1 and film-forming aid 2, and wax emulsion to the ground first component slurry, uniformly disperse at 700 r / min for 15 minutes, then add thickener at a stirring speed of 1200 r / min, and continue stirring for 10 minutes to obtain a highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint.

[0063] Example 3

[0064] The coating formula of the present embodiment is as follows:

[0065] 130 parts of deionized water, 2 parts of bactericide (chloromethylisothiazolinone), 3 parts of defoaming agent (polyether siloxane copolymer), 15 parts of dispersant (modified styrene maleic anhydride copolymer solution), 3 parts of bentonite (sodium bentonite), 150 parts of rutile titanium dioxide, 30 parts of quartz powder, 50 parts of 1250 mesh precipitated barium sulfate, 450 parts of acrylic emulsion, 100 parts of epoxy dispersion, 20 parts of film-forming aid 1 (dipropylene glycol butyl ether), 10 parts of film-forming aid 2 (dipropylene glycol methyl ether), 30 parts of wax emulsion (polyethylene wax emulsion) and 10 parts of thickener (polyurethane).

[0066] 1) Prepare the first component slurry:

[0067] Deionized water, bactericide, defoamer, dispersant, bentonite, rutile titanium dioxide, quartz powder and barium sulfate were added in sequence at a speed of 300 r / min, the speed was increased to 1200 r / min, and the mixture was dispersed for 15 minutes to obtain a first component slurry.

[0068] 2) The first component slurry enters a horizontal sand mill for grinding. The grinding time is 30 minutes, and the first component slurry is ground to a fineness of less than 40 μm.

[0069] 3) Add acrylic emulsion, epoxy dispersion, film-forming aid 1 and film-forming aid 2, and wax emulsion to the ground first component slurry, uniformly disperse at 700 r / min for 15 minutes, then add thickener at a stirring speed of 1200 r / min, and continue stirring for 10 minutes to obtain a highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint.

[0070] Example 4

[0071] The coating formula of the present embodiment is as follows:

[0072] 150 parts of deionized water, 5 parts of fungicide (chloromethylisothiazolinone), 5 parts of defoamer (polyether siloxane copolymer), 20 parts of dispersant (modified styrene maleic anhydride copolymer solution), 4 parts of bentonite (sodium bentonite), 150 parts of rutile titanium dioxide, 50 parts of quartz powder, 80 parts of 1250 mesh precipitated barium sulfate, 500 parts of acrylic emulsion, 150 parts of epoxy dispersion, 30 parts of film-forming aid 1 (dipropylene glycol butyl ether), 20 parts of film-forming aid 2 (dipropylene glycol methyl ether), 30 parts of wax emulsion (polyethylene wax emulsion) and 15 parts of thickener (polyurethane).

[0073] 1) Prepare the first component slurry:

[0074] Deionized water, bactericide, defoamer, dispersant, bentonite, rutile titanium dioxide, quartz powder and barium sulfate were added in sequence at a speed of 300 r / min, the speed was increased to 1200 r / min, and the mixture was dispersed for 15 minutes to obtain a first component slurry.

[0075] 2) The first component slurry enters a horizontal sand mill for grinding. The grinding time is 30 minutes, and the first component slurry is ground to a fineness of less than 40 μm.

[0076] 3) Add acrylic emulsion, epoxy dispersion, film-forming aid 1 and film-forming aid 2, and wax emulsion to the ground first component slurry, uniformly disperse at 700 r / min for 15 minutes, then add thickener at a stirring speed of 1200 r / min, and continue stirring for 10 minutes to obtain a highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint.

[0077] The floor paint was applied on the test block and a Taber abrasion tester was used. The grinding wheel model was CS-10F and the weight of the rubber grinding wheels at both ends was adjusted to 750g. After running 500 times at a speed of 60r / min, the mass loss of each test plate after sanding was calculated by the reduction method. The average mass loss of the three test plates was taken as the result of the wear resistance test.

[0078] Table 1 is a comparison of the performance test results of floor paints in different embodiments:

[0079] Table 1 Performance test of floor paint obtained in Examples 1 to 4

[0080]

[0081] It can be seen from the data in Table 1 that the coatings prepared in Examples 1 to 4 of the present invention all have good wear resistance, acid resistance and weather resistance, among which the comprehensive performance of Example 3 is the best among the four examples.

[0082] In summary, the floor paint formula of the present invention uses a modified styrene maleic anhydride copolymer solution as a dispersant, so that the floor paint has good water resistance and gloss, and uses sodium bentonite to make the storage stability of the floor paint meet the standard. At the same time, the addition amount of quartz powder and barium sulfate is controlled to achieve good wear resistance and gloss of the floor paint. The combination of acrylic emulsion and epoxy dispersion improves the gloss, water resistance, wear resistance, acid resistance, alkali resistance and other properties;

[0083] At the same time, the selection of dipropylene glycol butyl ether and dipropylene glycol methyl ether as film-forming aids 1 and 2 plays a key role in the drying speed, hardness and water resistance of the floor paint, and controlling the amount of wax emulsion added can improve the scratch resistance and wear resistance.

[0084] The formula of the present invention is tested by continuously controlling variables to obtain the best formula of floor paint that meets the national standard (GB / T22374-2018 "Floor Coating Materials"), and at the same time solves the deficiencies of wear resistance, weather resistance and water resistance in existing floor paint products. The formula of the present invention is excellent in wear resistance, weather resistance and water resistance, and as a water-based single-component acrylic floor paint, it will not affect the construction time when constructed in high temperature weather, and solves the problem of activation period of two-component floor paint.

[0085] Comparative Example 1

[0086] The difference between this comparative example and Example 3 is that the dispersant is adjusted to the sodium salt dispersant product of "Nopco 5040", and the remaining steps and processes are referred to Example 3 to obtain the acrylic hybrid epoxy floor paint prepared under the conditions of different types of dispersants in this comparative example, and the relevant properties are measured and compared with Example 3. The results are shown in Table 2.

[0087] Table 2 Floor paint obtained in Comparative Example 1

[0088]

[0089]

[0090] It can be seen from Table 2 that the type of dispersant has a significant effect on the performance of floor paint. It can be seen from the test indicators that after the dispersant in the formula of Example 3 is replaced by a sodium salt dispersant, the national standards are not met in terms of storage stability, pencil hardness, water resistance, alkali resistance and other test indicators. This is because the sodium salt dispersant belongs to the sodium salt aqueous solution of an unsaturated carboxylic acid copolymer, a light metal, easily soluble in water, and relatively poor water resistance. It is insufficient to disperse and wet organic pigments, resulting in a decrease in related indicators such as water resistance and alkali resistance.

[0091] Comparative Example 2

[0092] The difference between this comparative example and Example 3 is that the dispersant is adjusted to 15 parts of ammonium salt dispersant, and the sodium salt dispersant product of "Nopco 5027" is selected. The remaining steps and processes are all referred to Example 3, and the acrylic hybrid epoxy floor paint prepared under the conditions of different types of dispersants in this comparative example is obtained. The relevant properties are measured and compared with Example 3. The results are shown in Table 3.

[0093] Table 3 Floor paint obtained in Comparative Example 2

[0094]

[0095]

[0096] It can be seen from Table 3 that the type of dispersant has a significant effect on the performance of floor paint. It can be seen from the test indicators that after the dispersant in the formula of Example 3 is replaced by an ammonium salt dispersant, the storage stability, gloss and other test indicators all fail to meet the national standards. This is because ammonium substances are volatile and easily cross-link with multivalent metal cations in the paint film to form acidic polymers. Therefore, ammonium salts have a poor dispersing effect on inorganic pigments and fillers, resulting in insufficient steric hindrance of the filler particles, thereby affecting storage stability and gloss.

[0097] Comparative Example 3

[0098] The difference between this comparative example and Example 3 is that the amount of bentonite added is reduced to 1 part, and the rest of the formula and preparation process are the same as those of Example 3.

[0099] Comparative Example 4

[0100] The difference between this comparative example and Example 3 is that the amount of bentonite added is increased to 5 parts, and the rest of the formula and preparation process are the same as those of Example 3.

[0101] The floor paints prepared in Comparative Examples 3 and 4 were tested for wear resistance and weather resistance, and the comparison results with those of Example 3 are shown in Table 4.

[0102] Table 4 Floor paint obtained in Comparative Example 4

[0103]

[0104]

[0105] It can be seen from Table 4 that after increasing and decreasing the amount of bentonite added, the performance test of floor paint showed different degrees of non-compliance, as shown in the following:

[0106] When the amount of bentonite added was reduced to 1 part, the storage stability of the floor paint showed serious stratification during the performance test. This is because bentonite has a significant thickening effect and suspension, and reducing it cannot effectively prevent the sedimentation and stratification of pigments and fillers.

[0107] When the amount of bentonite added is increased to 5 parts, the gloss of the floor paint is 35 degrees under the test standard of 60 degrees. This is because too much bentonite causes the viscosity of the paint to be too high, which is not conducive to the flow and coating of the paint, thereby affecting the gloss and texture effect of the paint film. This will make the visual effect of the floor paint poor, make cleaning and maintenance difficult, affect the anti-slip performance and reduce the wear resistance.

[0108] At the same time, due to the ability of bentonite to absorb methylene blue, also known as the blue absorption amount, which increases with the increase of bentonite, the gloss in the coating system is adsorbed by bentonite, thereby reducing the gloss.

[0109] Bentonite mainly plays the role of thickener, suspension anti-settling agent, auxiliary binder and rheological additive in floor paint. Its special layered structure gives it water absorption, expansion, thixotropy and rheological properties. These properties enable bentonite to effectively improve the consistency, suspension, adhesion and rheological properties of the paint. Therefore, excessive or insufficient bentonite will affect the performance of floor paint, thereby affecting the storage stability and gloss of the paint.

[0110] Comparative Example 5

[0111] The difference between this comparative example and Example 3 is that the amount of quartz powder added is reduced to 5 parts, and the rest of the formula and preparation process are the same as those of Example 3.

[0112] Comparative Example 6

[0113] The difference between this comparative example and Example 3 is that the amount of quartz powder added is increased to 60 parts, and the rest of the formula and preparation process are the same as those of Example 3.

[0114] The floor paints prepared in Comparative Examples 5 and 6 were subjected to various performance tests, and the comparison results with those in Example 3 are shown in Table 5.

[0115] Table 5 Floor paint obtained from Comparative Examples 5 to 6

[0116]

[0117]

[0118] It can be seen from Table 5 that after increasing and decreasing the amount of quartz powder added, the performance test of floor paint showed different degrees of non-compliance, as shown in the following:

[0119] When the amount of quartz powder added was reduced to 5 parts, the gloss, pencil hardness, abrasion resistance, tensile bonding strength, anti-slip coefficient and acid resistance of the floor paint did not reach the standard value during the performance test.

[0120] When the amount of quartz powder added increased to 60 parts, the storage stability, gloss, impact resistance and acid resistance of the floor paint did not meet the standards.

[0121] The main component of quartz powder is silicon dioxide (SiO2), which mainly plays the role of improving hardness, wear resistance, chemical corrosion resistance and stability in floor paint. Due to the high hardness and chemical inertness of quartz powder, it can enhance the compression resistance, wear resistance, chemical corrosion resistance and durability of floor paint, thereby improving the quality and service life of floor paint and reducing maintenance costs.

[0122] Therefore, excessive addition of quartz powder may affect the leveling and glossiness of the coating, and also increase the cost. Insufficient addition of quartz powder will lead to a decrease in the mechanical properties and chemical resistance of the floor paint, affecting its durability and maintenance costs.

[0123] Comparative Example 7

[0124] The difference between this comparative example and Example 3 is that barium sulfate is not added to the formula, and the remaining steps and processes are referred to Example 3. The acrylic hybrid epoxy floor paint prepared in this comparative example without barium sulfate is obtained, and the relevant properties are measured and compared with Example 3. The results are shown in Table 6.

[0125] Table 6 Floor paint obtained in Comparative Example 7

[0126]

[0127] It can be seen from Table 6 that when barium sulfate is not added to the formula, when the performance test is carried out, the wear resistance, tensile bonding strength, anti-slip coefficient, acid resistance, artificial weathering resistance, etc. are all inferior to those of Example 3, but the glossiness is better than the formula of Example 3.

[0128] It should be noted that the addition of barium sulfate increases the film thickness and fills the gap in the amount of powder, and improves the mechanical properties such as wear resistance, tensile bonding strength, anti-slip coefficient, acid resistance, and resistance to artificial weathering. At the same time, it can be seen from the test results that the addition of barium sulfate has a relatively slight effect on the decrease in gloss.

[0129] Comparative Example 8

[0130] The difference between this comparative example and Example 3 is that the acrylic emulsion is adjusted to 8760 produced by Badfu, and the remaining steps and processes are all referred to Example 3, so as to obtain the acrylic hybrid epoxy floor paint prepared under the conditions of acrylic emulsions from different manufacturers in this comparative example, and measure the relevant properties and compare them with Example 3.

[0131] The floor paint prepared in Comparative Example 8 was subjected to various performance tests, and the comparison results with those in Example 3 are shown in Table 7.

[0132] Table 7 Example 8, prepared floor paint

[0133]

[0134] It can be seen from Table 7 that after the floor paint was replaced with acrylic emulsion, many properties of the floor paint changed, as shown in the following:

[0135] The acrylic emulsion selected in this Example 3 is 2337 from Baolijia, which is a self-crosslinking pure acrylic emulsion with isocyanate groups introduced in the synthesis stage, so that this emulsion can form a film without adding any film-forming aids, and has excellent hardness and hardness improvement rate; while 8760 from Badfu is a pure acrylic emulsion with high MFT and Tg, so if a film is to be formed in the system, a large amount of film-forming aids must be added, which makes the water resistance and alkali resistance of this product drop sharply, and at the same time makes the initial hardness and final hardness low, and cannot meet the hardness requirements of floor paint.

[0136] Comparative Example 9

[0137] The difference between this comparative example and Example 3 is that the manufacturer of the epoxy dispersion is the acrylic emulsion of GS500D from Guangshu Chemical, and the remaining steps and processes are all referred to Example 3 to obtain the acrylic hybrid epoxy floor paint prepared under the conditions of acrylic emulsions from different manufacturers in this comparative example.

[0138] The floor paint prepared in Comparative Example 9 was subjected to various performance tests, and the comparison results with those in Example 3 are shown in Table 7.

[0139] Table 8 Floor paint obtained in Comparative Example 9

[0140]

[0141] As shown in Table 8, after the epoxy dispersion was replaced, the storage stability of the floor paint decreased and stratification occurred. Specifically, after the epoxy dispersion manufacturer was changed to GS500D from Guangshu Chemical, a large amount of ethylene glycol butyl ether was added during the ring opening of the epoxy resin, resulting in a large amount of corresponding thickeners to be added, and the storage stability was affected. A large amount of hydrophilic ethylene glycol butyl ether also led to a decrease in the water resistance and acid and alkali resistance of the product.

[0142] Comparative Example 10

[0143] The difference between this comparative example and Example 3 is that the ratio of epoxy dispersion to acrylic emulsion is adjusted to 50:5, and the total amount of both added is kept at 55 parts, that is, 500 parts of acrylic emulsion and 50 parts of epoxy dispersion. The rest of the formula and preparation process are the same as Example 3.

[0144] Comparative Example 11

[0145] The difference between this comparative example and Example 3 is that the ratio of epoxy dispersion to acrylic emulsion is adjusted to 40:15, and the total amount of both added is kept at 55 parts, that is, 400 parts of acrylic emulsion and 150 parts of epoxy dispersion. The rest of the formula and preparation process are the same as Example 3.

[0146] The acrylic hybrid epoxy floor paint prepared in Comparative Examples 10 to 11 was subjected to performance testing, and the comparison results with those of Example 3 are shown in Table 9.

[0147] Table 9 Fiber properties obtained in Comparative Examples 10 to 11

[0148]

[0149] As can be seen from the table, the more acrylic emulsion, the better the weather resistance, water resistance, acid and alkali resistance; the more epoxy dispersion, the better the abrasion resistance, pencil hardness, gloss and tensile bond strength. However, it is necessary to find a balance point so that the comprehensive performance of the floor paint is better and meets the relevant national standards.

[0150] Comparative Example 12

[0151] The difference between this comparative example and Example 3 is that the film-forming aid is reduced by 1 to 10 parts, and the film-forming aid 2 is replaced with alcohol ester dodecaethanol, and the product is Runtai Chemical's dodecanol ester. The rest of the formula and preparation process are the same as Example 3.

[0152] The performance of the acrylic hybrid epoxy floor paint prepared in Comparative Example 12 was tested, and the comparison results with those in Example 3 are shown in Table 10.

[0153] Table 10 Floor paint obtained in Comparative Example 12

[0154]

[0155] It can be seen from Table 10 that after reducing the amount of film-forming aid 1 added and changing the type of film-forming aid 2, the surface drying time of the floor paint is increased. This is because alcohol ester twelve is a slow-drying film-forming aid with a boiling point of only 252 degrees. Its volatilization rate is slow and it will exist in the paint film for a long time, resulting in a slower drying speed of the floor paint and a decrease in the initial hardness. However, since alcohol ester twelve is insoluble in water, the water resistance and various acid and alkali resistance of the floor paint will be improved.

[0156] However, the dipropylene glycol methyl ether and dipropylene glycol butyl ether selected in the formula of the present invention have excellent chemical stability, are compatible with a variety of organic substances, are not prone to chemical changes, and have relatively moderate volatility, one fast and one slow, which helps to control the volatilization gradient of the coating.

[0157] In summary, the floor paint prepared by the technical solution of the present invention has good wear resistance and weather resistance. The selected acrylic emulsion and epoxy dispersion interact with each other, thereby playing a good role in the gloss, water resistance, wear resistance, acid resistance and alkali resistance of the floor paint. The selection of suitable film-forming aids has good benefits while maintaining good performance.

[0158] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint, characterized in that: The acrylic hybrid epoxy floor paint is composed of the following components in parts by mass: 100-150 parts of deionized water, 1-5 parts of bactericide, 1-5 parts of defoamer, 10-20 parts of dispersant, 2-4 parts of bentonite, 100-150 parts of rutile titanium dioxide, 10-50 parts of quartz powder, 30-80 parts of barium sulfate, 400-500 parts of self-crosslinking acrylic emulsion containing isocyanate group, 80-150 parts of epoxy dispersion, 10-50 parts of film-forming aid, 10-30 parts of wax emulsion and 5-15 parts of thickener; The self-crosslinking acrylic emulsion containing isocyanate groups is 2337 of Baolijia; The film-forming aid is composed of a film-forming aid 1 and a film-forming aid 2, wherein the film-forming aid 1 is dipropylene glycol butyl ether, and the film-forming aid 2 is dipropylene glycol methyl ether, wherein the film-forming aid 1 is 10 to 30 parts and the film-forming aid 2 is 5 to 20 parts; The dispersant is a modified styrene maleic anhydride copolymer solution.

2. The highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint according to claim 1, characterized in that: The defoaming agent includes one or more of a mineral oil defoaming agent and a silicone defoaming agent.

3. The highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint according to claim 1, characterized in that: The bentonite includes one or more of sodium-based bentonite, calcium-based bentonite, organic bentonite, and lithium-based bentonite.

4. The highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint according to claim 1, characterized in that: The barium sulfate is precipitated barium sulfate, and the mesh number is 1250-4000 meshes.

5. The method for preparing a highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint according to any one of claims 1 to 4, characterized in that: include, Deionized water, bactericide, defoamer, dispersant, bentonite, rutile titanium dioxide, quartz powder and barium sulfate are added in sequence at a speed of 300 to 500 r / min, the speed is increased to 1000 to 1200 r / min, and the mixture is dispersed for 10 to 15 minutes to obtain a first component slurry; The first component slurry is fed into a horizontal sand mill for grinding; Add self-crosslinking acrylic emulsion containing isocyanate group, epoxy dispersion, film-forming aid 1 and film-forming aid 2, and wax emulsion to the ground first component slurry, evenly disperse at 500-700 r / min for 10-15 minutes, then add thickener at a stirring speed of 1000-1200 r / min, continue stirring for 10-20 minutes to obtain floor paint.

6. The method for preparing a highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint according to claim 5, characterized in that: The grinding process, wherein the grinding time is 30-50 minutes, grinds the first component slurry to a fineness less than 40 μm.

7. Use of the highly wear-resistant and weather-resistant acrylic hybrid epoxy floor paint as described in any one of claims 1 to 4 in protecting the floor from external damage and extending the service life of the floor.

Images